Block-mold



.W. H. PATTERSON.

BLOCK MOLD.

APPLICATION FILED SEPT. 20, 1919.

Patented Mar. 30, 1920.

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||||||| IKII LE W. H. PATTERSON.

BLOCK MOLD.

APPLICATION FILED SEPT.20. I919.

Patented Mar. 30, 1920..

3 SHEETSSHEET 2.

w. H. PATTERSON.

BLOCK MOLD.

APPLICATION FILED SEPT.20, 1919.

Patented M31. 30, 1920.

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UNITED STATES PATENT @FFTQE.

WILLIAM H. PATTERSON, -O13 GUYAHOGA FALLS, OHIO, ASSIGNOR 0F ONE-HALF TOFRED ELLSWORTH, OF CUYAHOGA FALLS, OHIO.

BLOCK-MOLD.

Application filed September 20, 1919.

To all whom it may concern Be it known that 1, WILLIAM H. PATTER- soN,citizen of the United States, residing at Cuyahoga Falls, in the countyof Summit and State of Ohio, have invented certain new and usefulImprovements in Block- Molds, of which the following is a specification.

This invention relates to an improvement in block molding machines usedin the manufacture of cement blocks and the like and has for its objectto provide an improved mold of a separable type and means which are newand novel for with-drawing the cores used to form the block.

Further objects of the invention reside in the provision of means forwith-drawing the cores in opposite directions and at the same relativespeed, means also being provided to lock the cores in any predeterminedposition.

Further objects of the invention are in part obvious and will appear inpart in the following description and claims.

Referring particularly to the drawings wherein like reference numeralsdesignate similar parts of reference throughout the various views andwherein Figure 1 is a side elevation of the machine constructed inaccordance with the principles hereinbefore set forth and having one ofthe removable cores shown in a dotted line position; Fig. 2 isa planview; Fig. 3 is a sectional end elevation; Fig. t is a sectional detailon the line 4t1 of Fig. 2; Fig. 5 is a horizontal section through theblock, the pallet upon which it is formed being shown therebeneath, andFig. 6 is a vertical section on the line 66 of Fig. 5.

The machine as shown consists of a platform 1 mounted upon legs 2 andhaving longitudinal guides or tracks 3 bolted thereto, the upper face ofthe tracks being on a plane with the top of the table 1. The table 1 hasintegral with its front face lugs or ears 4 to which are pivoted theears 5 of the side member 6 0f the mold, which may drop forwardly due tothis hinged construction. The opposite side member 7 is made integralwith the table 1 and retains the same position at all times, and iffound necessary the side 7 may be reinforced by ribs 8. The end members9 and 10 of the mold are substantially identical in construc-Specification of Letters Patent.

Patented Mar. 30, 1920.

Serial No. 325.048.

The members 9 and 10 are each provided equidistant from the center lineof the mold with two vertical beads 11 which provide a groove in theblock to allow a bond to be had for the mortar when the same are set ina building. The end members have secured to their outside lowermostportion two brackets 12 and 13 which support between their lower endsrollers 14- which have formed therewith a triangular groove a. Theserollers are mounted upon triangular ribs 15 formed on the upper face ofthe tracks 3 thereby to allow the end members 9 and 10 to move freelyoutwardly or away from the mold at the proper time. This outsidemovement may be obtained by means of racks 16 and 17 secured to theoutside of the ends 9 and 10 by means of bolts 18.

- The rack 16 projects downwardly and under the mold table and isextended over to the right hand side of the machine where it passesbetween an anti-friction roller 19 and a gear pinion20. The rack 17 islikewise secured to the end member 10 and projects at right anglesthereto, the teeth of the rack 17 meshing with the gear 20 and confinedthereupon by means of an antifriction roller 21 which is supportedtogether with the roller 19 between a pair of brackets 22 secured to themember 3. The pinion 20 is fixed on a shaft 24: which has bearing in themembers 3 and is adapted to be rotated by means of a crank 25 suitablysecured to that portion of the shaft 24 which extends beyond the member3. This shaft may be locked in position by means of a swinging latch 26which is pivoted upon a bracket 27 secured to the member 3 and providesa means for keeping the ends 9 and 10 in a set position during thetamping of the cement when forming the block. The front 6 of the mold isheld in a positive relation to the ends 9 and 10 and is prevented fromspreading during the tamping operation by means of angular clips 28carried by the end members 9 and 10, and these clips may be bolted tothe end plates as shown at 30.

To prevent the racks and pinion from becoming clogged with cement andthe like I provide a guard plate 31 which has one end supported upon thetop of the bracket 12 and its opposite end supported upon the end of therack 17 as shown at 32. And to support the rack 17 at times when theends are in the outward position I provide a bearing strap 33 which isbolted to the end member 3. The end plates 9 and 10 have bolted to theirinner faces cores 35 which may be of any size or shape to provide thedesired recess in the block such as indicated at 36 in Figs. and 6.

In operation we will assume that the ends 9 and 10 are 'in the outwardposition as shown in dotted lines in Fig. 1 and that the front plate 6is swung outwardly as shown in dotted lines in Fig. 2. The firstoperation thenis to swing the plate 6 upwardly until it assumes avertical position,

and this may be determined by the lower edge of the plate resting upon apallet 33 which has been previously laid upon the top face of the table1 and in correct position to the center thereof. The gear is rotated bymeans of the crank arm in a direction to move the racks 16 and 17 andtherewith the ends 9 and 10 to the closed position as indicated in thefigures.

The ends 9 and 10 having been moved to their proper position the clips28 are engaged with the front and rear plates 6 and 7 and consequentlyretain the same in the proper position with the ends 9 and 10. Thecement is put into the mold and tamped, and when it is set the latch 26is swung from engagement from the crankarm 25 and said arm is rotated ina direction to pull the ends 9 and 10 and with them the cores outwardlyaway from the block without danger of breaking the block because of thedirect straight line movement of the cores due to the means provided forsupporting them during their outward movement as hereinbefore described.The front plate 6 is then allowed to drop down and the block can belifted on the pallet and removed for a further operation.

The important feature of the invention is in the direct line movement ofthe ends 9 and 10 whereby the cores are withdrawn from the mold withoutbreaking or in any way disturbing the block.

I claim:

1. In a molding machine, the combination with a mold having opposite endplates slidable in and out to close and open the mold, a rack barattached to each end plate, one of said bars extending under the mold toa position parallel and opposite to the other bar, and a pinion locatedbetween and engaging both of said rack bars, to operate bothsimultaneously.

2. In a molding machine, the combination with a table having a top andmold thereon, the table having opposite end extensions and the moldhaving opposite end plates movable along said extensions to open orclose the mold, a rack bar attached to each end plate, one of saidbars'being curved downwardly under the table and under the extension atthe opposite end thereof, and a crank shaft mounted on said extensionand provided with a pinion en gaging both of said rack bars.

In a molding machine, the combination of a table, a mold thereon havingopposite end plates movable in and out to close and open the mold, andmeans at one end of the table to operate both of said end plates, saidmeans including a bar extending under the table and fixed to theopposite end plate. I

In testimony whereof, I do afiix my signature in presence of twowitnesses.

lVILLIAlvl H. PATTERSON. lVitnesses:

FRED ELLSVVORTH, ROBERT L. BRUoK.

